Fixed released https://usn.ubuntu.com/4058-2/
** Changed in: bash (Ubuntu Trusty)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1803441
Title:
BASH_CMDS is writable in restricted bash shells (fixed upstream, need
to backport patch)
Status in bash package in Ubuntu:
Fix Released
Status in bash source package in Trusty:
Fix Released
Bug description:
In 14.04 LTS, the BASH_CMDS variable is writable in rbash. This allows
a trivial escape from rbash to run arbitrary shell commands.
This issue is fixed upstream:
http://git.savannah.gnu.org/cgit/bash.git/tree/CHANGES?h=bash-4.4-testing#n65
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